On 11/1/20 5:43 AM, Guy Dunphy via cctalk wrote: > At 12:14 PM 27/10/2020 -0500, you wrote: >> Hi All, >> >> I have an EP-1 eprom programmer from BP Microsystems. >> >> The rubber feet melted. It was in my closet. I have no clue how it got >> that hot, or if they >> are just some composition for them to melt. >> >> My question is how do I clean this up? Acetone, paint thinner? I scraped >> off the feet, so there is >> just a few 'streams' of melted rubber down the sides, and a bit that >> somehow got inside (also on the side, not on the electronics). >> >> Just looking for some ideas before I start applying chemicals... >> >> Thanks, >> Kelly > > > It's not heat. Just some rubber types degrade chemically over time. Cross > links between the long > chain hydrocarbons break, and the solid turns to a semi-liquid. Very sticky > liquid. > > I presume the body of your eprom programmer is painted metal or plastic. So > 'acetone and hot air' - NO! > > The gunky stuff is not terribly soluble. Mineral turps on a tissue pad, > rubbing, kind of works. > Mechanically scrape off what you can first. Use wooden or plastic spatula to > avoid scratching paint. > The rub with the pad. Solvents like turps, acetone, IPA etc - always try a > little on your surface first > to check the material isn't damaged by the solvent. > > Guy >
-- --Chuck Sent from my digital computer
